• 
  James Doohan

  Thomas
• 
  Mia Farrow

  Allison Mackenzie
• 
  Christopher Connelly

  Norman Harrington
• 
  James Douglas

  Steven Cord
• 
  George Macready

  Martin Peyton
• 
  Dorothy Malone

  Constance Mackenzie Carson
• 
  Patricia Morrow

  Rita Jacks Harrington
• 
  Ed Nelson

  Michael Rossi

• 
  Tim O'Connor

  Elliot Carson
• 
  Ryan O'Neal

  Rodney Harrington
• 
  Steve Oliver

  Lee Webber
• 
  Barbara Parkins

  Betty Anderson Cord
• 
  Evelyn Scott

  Ada Jacks
• 
  Lana Wood

  Sandy Webber
• 
  Dick Tufeld

  Announcer (voice)

• 
  Warner Anderson

  Narrator